An inner bound of capacity region for the Gaussian interference channel

Xiaohu Shang, Biao Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

An inner bound of capacity region for the Gaussian interference channel is derived using Sato's modified frequency division multiplexing idea [1] and a special case of Han and Kobayashi's rate region (denoted by G′ in [2]). We show that the new inner bound includes G′, Sason's rate region D [3], as well as the achievable region via TDM/FDM [4], as its subsets. The advantage of this improved inner bound over G′ arises due to its inherent ability to utilize the whole transmit power range on the real line without violating the power constraint. We also provide analysis to show that the new achievable region strictly extends G′ if max (R1, R2)∈G′ {R 1 + kR 2} is nonconcave for some k ∈ [0, +∞), where R 1 and B 2 are the rates of the two users.

Original languageEnglish (US)
Title of host publicationIEEE Wireless Communications and Networking Conference, WCNC
Pages2050-2054
Number of pages5
DOIs
StatePublished - 2007
Event2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 - Kowloon, China
Duration: Mar 11 2007Mar 15 2007

Other

Other2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
CountryChina
CityKowloon
Period3/11/073/15/07

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Keywords

  • Gaussian interterence channel
  • Inner bound
  • Sum capacity

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Shang, X., & Chen, B. (2007). An inner bound of capacity region for the Gaussian interference channel. In IEEE Wireless Communications and Networking Conference, WCNC (pp. 2050-2054). [4204560] https://doi.org/10.1109/WCNC.2007.384